Update helm chart for Private image Pull

[Deepakdevd]

Present helm chart supports for pulling image from dockerhub/public repository , its not supported for private image pull

[kskewes-sf]

Can you please elaborate?
Are you using the Helm Chart with a container image you have built & pushed to a private registry?

We have started publishing the container image to GHCR and this image can now be pulled anonymously.
We do still need to update the helm chart to reflect this per #215 (comment)